Matplotlib 教程 - 饼图

Jinku Hu 2023年1月30日 2019年12月26日

Matplotlib Matplotlib Pie Chart

顺时针方向绘制的饼图
饼图与爆炸切片

我们将在本教程中学习饼图。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label)
plt.show()

Matplotlib 饼图

语法

matplotlib.pyplot.pie(x, explode=None, labels=None, colors=None, autopct=None,
                      pctdistance=0.6, shadow=False, labeldistance=1.1,
                      startangle=None, radius=None, counterclock=True,
                      wedgeprops=None, textprops=None, center=(0, 0),
                      frame=False, hold=None, data=None)

参数

名称	描述
`label`	标签文字
`fontdict`	标签文字字体字典，例如字体系列、颜色、粗细和大小
`labelpad`	标签和 x 轴之间的间距，以 `points` 为单位

顺时针方向绘制的饼图

如果参数 counterclock 设置为 False，则饼形图将按顺时针方向绘制。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label, counterclock=False)
plt.show()

Matplotlib 饼图-顺时针

饼图与爆炸切片

explode 参数控制饼图中的切片爆炸。它指定偏移每个楔形的半径的分数。

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt

x = np.array([15, 25, 30, 40])
label = ["France", "Germany", "Uk", "US"]

plt.pie(x, labels=label, explode=(0.2, 0, 0, 0))
plt.show()

Matplotlib 饼图-爆炸

Author: Jinku Hu

Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.